The challenge addressed in this research centres on the need to choose between several biomassBiomass sources and energy production processes, while supporting rural economies and resilienceResilience of forestForest systems. A key barrier to effective decision-making for strategies using biomassBiomass is the lack of standardized and transparent life cycle assessment (LCALife Cycle Assessment (LCA)) baselinesBaseline. These baselinesBaseline are critical for assessing the impacts of biomassBiomass strategies but often vary due to regional factors and chosen simplifying assumptions of the LCAsLife Cycle Assessment (LCA). However, omitting key variables can mean the LCALife Cycle Assessment (LCA) omits key feedback and balancing loops relevant to fully assessing impacts of the change or test scenario. To address these complexitiesComplexity, this project employs a systems engineeringSystems engineering approach: visual systems mappingSystems mapping. This technique is used to define the boundaries and dynamic behaviours of LCALife Cycle Assessment (LCA) baselinesBaseline, enhancing transparency. By examining five literature sources and their documented baselineBaseline scenarios, the systems mappingSystems mapping case-studies demonstrates an approach to documenting and archiving these baselinesBaseline. Recommendations are that visual systems mappingSystems mapping should be used to document key assumptions, such as baselinesBaseline, of LCAsLife Cycle Assessment (LCA). Further, where possible open data repositories should hold key information about LCALife Cycle Assessment (LCA) baselinesBaseline and reproducible workflows (e.g., using open-source tools) should be used to improve transparency and comparability in LCAsLife Cycle Assessment (LCA). Given the consensus within the broader scientific community on the importance of replicable data practices, this research reinforces the need for standardized frameworks and systems engineeringSystems engineering tools in LCAsLife Cycle Assessment (LCA). This research demonstrates a pathway to more transparent, standardized, and comparable LCAsLife Cycle Assessment (LCA), that may bolster decisions for biomassBiomass systems.